918947-05-4

Guanosine,5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-6-O-[7-[[(1,1-dimethylethyl)diphenylsilyl]oxy]heptyl]-N-(2-phenoxyacetyl)-, 3'-(2-propen-1-ylcarbonate)